126Driving and operatingOverrun cut-off
The fuel supply is automatically cut off
during overrun, i.e. when the vehicle
is driven with a gear engaged but
accelerator pedal is released.
Depending on driving conditions, the
overrun cut-off may be deactivated.
Stop-start system
The stop-start system helps to save
fuel and to reduce the exhaust
emissions. When conditions allow, it
switches off the engine as soon as the
vehicle is at a low speed or at a
standstill, e.g. at a traffic light or in a
traffic jam.
Activation The stop-start system is available as
soon as the engine is started, the
vehicle starts-off and the conditions
as stated below in this section are
fulfilled.
The system is ready to operate when
the LED in the button Ò is not
illuminated. To activate the system
when the system is deactivated,
press Ó.If the stop-start system is temporarily
not available and the button Ò is
pressed, the LED in the button
flashes.
Deactivation
Deactivate the stop-start system
manually by pressing Ò. The
deactivation is indicated when the
LED in the button illuminates.
Autostop
Vehicles with manual transmission
An Autostop can be activated at a
standstill.Activate an Autostop as follows:
● Depress the clutch pedal.
● Set the lever to neutral.
● Release the clutch pedal.
The engine will be switched off while
the ignition stays on.Vehicles with automatic transmission If the vehicle is at a standstill with
depressed brake pedal, Autostop is
activated automatically.
The engine will be switched off while
the ignition stays on.
The stop-start system will be disabled
on inclines of 12% or more.
Indication
An Autostop is indicated by control
indicator D.
Driving and operating127During an Autostop, the heating and
brake performance will be
maintained.
Conditions for an Autostop
The stop-start system checks if each
of the following conditions is fulfilled.
● The stop-start system is not manually deactivated.
● The driver's door is closed or the driver's seat belt is fastened.
● The vehicle battery is sufficiently charged and in good condition.
● The engine is warmed up.
● The engine coolant temperature is not too high.
● The engine exhaust temperature is not too high, e.g. after driving
with high engine load.
● The ambient temperature is not too low or too high.
● The climate control system allows an Autostop.
● The brake vacuum is sufficient.● The self-cleaning function of the exhaust filter is not active.
● The vehicle was driven at least at
walking speed since the last
Autostop.
Otherwise an Autostop will be
inhibited.
Notice
The Autostop may be inhibited for
several hours after a battery
replacement or reconnection.
Certain settings of the climate control
system may inhibit an Autostop. See
Climate control chapter for more
details 3 111.
If an autostop is temporarily not
available, D flashes green 3 87.
Immediately after driving at a higher
speed an Autostop may be inhibited.
Vehicle battery discharge protection
To ensure reliable engine restarts,
several vehicle battery discharge
protection features are implemented
as part of the stop-start system.Power saving measures
During an Autostop, several electrical
features such as auxiliary electric
heater or rear window heating are
disabled or switched to a power
saving mode. The fan speed of the
climate control system is reduced to
save power.
Restart of the engine by the driver
Vehicles with manual transmission
Depress the clutch pedal without depressing the brake pedal to restart
the engine.
Vehicles with automatic transmission The engine is restarted if
● the brake pedal is released while
the selector lever is in position D
or M
● or the brake pedal is released or the selector lever is in position N
when the selector lever is moved
to position D or M
● or the selector lever is moved to position R.
136Driving and operating3. Push down the button and movethe selector lever out of P. Have
the cause of the power supply
interruption remedied by a
workshop.
4. Mount the selector lever trim onto
the centre console and refit.Manual transmission
To engage reverse on 5-speed
transmission, depress the clutch
pedal and move the selector lever to
the right and rear.
To engage reverse on 6-speed
transmission, depress the clutch
pedal, pull the ring under the selector
lever and move the selector lever
quite to the left and front.
If the gear does not engage, set the
lever to neutral, release the clutch
pedal and depress again; then repeat gear selection.
Do not slip the clutch unnecessarily. When operating, depress the clutch pedal completely. Do not use the
pedal as a foot rest.
Driving and operating137When clutch slip is detected for aspecific time, the engine power will be
reduced. A warning is displayed in the
Driver Information Centre. Release
the clutch.Caution
It is not advisable to drive with the hand resting on the selector lever.
Gear shifting 3 85.
Stop-start system 3 126.
Brakes
The brake system comprises two
independent brake circuits.
If a brake circuit fails, the vehicle can
still be braked using the other brake
circuit. However, braking effect is
achieved only when the brake pedal
is depressed firmly. Considerably
more force is needed for this. The
braking distance is extended. Seek the assistance of a workshop before
continuing the journey.
When the engine is not running, the
support of the brake servo unit
disappears once the brake pedal has been depressed once or twice.
Braking effect is not reduced, but
braking requires significantly greater
force. It is especially important to bear this in mind when being towed.
Control indicator R 3 84.
Antilock brake system
Antilock brake system (ABS)
prevents the wheels from locking.ABS starts to regulate brake pressure as soon as a wheel shows a tendency to lock. The vehicle remains
steerable, even during hard braking.
ABS control is made apparent
through a pulse in the brake pedal
and the noise of the regulation
process.
For optimum braking, keep the brake
pedal fully depressed throughout the
braking process, despite the fact that
the pedal is pulsating. Do not reduce
the pressure on the pedal.
When braking in an emergency, the
hazard warning flashers are switched
on automatically depending on the
force of deceleration. They are
switched off automatically the first
time you accelerate.
After starting off, the system performs
a self-test which may be audible.
Control indicator u 3 85.
Vehicle care193Instrument panel fuse boxFuse box on the left side of the
instrument panel
In right-hand drive vehicles, the fuse
box is located behind a cover in the
glovebox. Open the glovebox and
remove the cover.
No.Circuit1Interior mirror, exhaust system,
electric power steering, clutch
sensor, LPG, exterior mirror
adjustment, inductive charging2–3Trailer hitch4Horn5Windscreen washer pump
front / rear6Windscreen washer pump
front / rearNo.Circuit7Heated steering wheel8Rear wiper9–10Central locking system11Central locking system12Instrument cluster13Climate control system, USB14BTA module15Instrument cluster, climate
control system16Brake, starter, retained power
off17Instrument cluster18Advanced parking assist19Top column module, trailer
control module20–21Anti-theft alarm system, start
button
238IndexAAccessories and vehicle modifications .......................... 174
Active emergency braking ....88, 147
AdBlue .......................... 86, 130, 229
Adjustable air vents ...................119
Advanced parking assist ............153
Airbag and belt tensioners ...........83
Airbag deactivation ................54, 83
Airbag label................................... 49 Airbag system .............................. 49
Air conditioning regular operation ................................ 120
Air conditioning system .............. 111
Air intake .................................... 120
Air vents...................................... 119
Antilock brake system ................ 137
Antilock brake system (ABS) .......85
Anti-theft alarm system ................31
Anti-theft locking system .............. 30 Appearance care ........................211
Armrest ............................. 44, 45, 62
Ashtrays ....................................... 76
Automatic anti-dazzle ..................35
Automatic crash notification (ACN) 99
Automatic light control ...............102
Automatic locking ........................28
Automatic transmission .............133
Autostop ............................... 87, 126
Auxiliary heater ........................... 118B
Battery discharge protection ......109
Belts.............................................. 46
BlueInjection ............................... 130
Bonnet ....................................... 176
Brake and clutch system .............84
Brake assist ............................... 138
Brake fluid .......................... 179, 219
Brake light................................... 186
Brakes ............................... 137, 179
Breakdown.................................. 209
Bulb replacement ....................... 182
C Capacities .................................. 229
Catalytic converter .....................130
Central locking system ................23
Centre console lighting ..............108
Centre console storage ...............62
Changing tyre and wheel size ...199
Charging system .......................... 83
Child locks ................................... 28
Child restraint installation locations ................................... 58
Child restraints.............................. 55
Child restraint systems ................55
Cigarette lighter ........................... 76
Climate control ............................. 15
Climate control systems .............110
Clock............................................. 74